I would really appreciate it if someone could:
- explain why the journal setup is way more important than striping
settings;
I'm not sure if it's what you're asking, but any write must be
physically written to the journal before the operation is acknowledged.
So the overall cluster performance (or rather write latency) is always
governed by the speed of those journals. Data is then gathered up into
(hopefully) larger blocks and committed to OSDs later.
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